ANALYTICAL METHOD ON TRACE ELEMENTS OF ROCK SAMPLE BY ACID DIGESTION METHOD WITH FUSED GLASS BEADS

摘要

Disclosed is an analytical method on trace elements of a rock sample by anaciddigestion method with fused glass beads, capable of improving analysisaccuracy for infusibleelements while shortening the process time. The analytical includes the stepsof forming glassbeads by mixing the rock sample with a flux; performing a primary aciddigestion by reacting theglass beads with a mixed acid solution; performing a secondary acid digestionby adding HClO4to a mixture of the primary acid digestion; diluting a mixture of thesecondary acid digestionwith an HNO3 aqueous solution; and measuring elements contained in the dilutedmixture.